587 citations · 4.2k across the 66 of their papers we have counts for
38 papers · 1 filter
Ameliorating the Courant-Friedrichs-Lewy condition in spherical coordinates: A double FFT filter method for general relativistic MHD in dynamical spacetimes
Liwei Ji, Vassilios Mewes, Yosef Zlochower +5
Numerical simulations of merging compact objects and their remnants form the theoretical foundation for gravitational wave and multi-messenger astronomy. While Cartesian-coordinate…
Superposed metric for spinning black hole binaries approaching merger
Luciano Combi, Federico G. Lopez Armengol, Manuela Campanelli +4
We construct an approximate metric that represents the spacetime of spinning binary black holes (BBH) approaching merger. We build the metric as an analytical superposition of two…
Numerical relativity in spherical coordinates: A new dynamical spacetime and general relativistic MHD evolution framework for the Einstein Toolkit
Vassilios Mewes, Yosef Zlochower, Manuela Campanelli +4
We present SphericalNR, a new framework for the publicly available Einstein Toolkit that numerically solves the Einstein field equations coupled to the equations of general relativ…
Eccentric Binary Black Holes with Spin via the Direct Integration of the Post-Newtonian Equations of Motion
Brennan Ireland, Ofek Birnholtz, Hiroyuki Nakano +2
We integrate the third and a half post-Newtonian equations of motion for a fully generic binary black hole system, allowing both for non-circular orbits, and for one or both of the…
On the properties of the massive binary black hole merger GW170729
Katerina Chatziioannou, Roberto Cotesta, Sudarshan Ghonge +53
We present a detailed investigation into the properties of GW170729, the gravitational wave with the most massive and distant source confirmed to date. We employ an extensive set o…
The second RIT binary black hole simulations catalog and its application to gravitational waves parameter estimation
James Healy, Carlos O. Lousto, Jacob Lange +3
The RIT numerical relativity group is releasing the second public catalog of black-hole-binary waveforms \url{http://ccrg.rit.edu/~RITCatalog}. This release consists of 320 accurat…
Numerical relativity in spherical coordinates with the Einstein Toolkit
Vassilios Mewes, Yosef Zlochower, Manuela Campanelli +3
Numerical relativity codes that do not make assumptions on spatial symmetries most commonly adopt Cartesian coordinates. While these coordinates have many attractive features, sphe…
Targeted numerical simulations of binary black holes for GW170104
James Healy, Jacob Lange, Richard O'Shaughnessy +22
In response to LIGO's observation of GW170104, we performed a series of full numerical simulations of binary black holes, each designed to replicate likely realizations of its dyna…
The RIT binary black hole simulations catalog
James Healy, Carlos O. Lousto, Yosef Zlochower +1
The RIT numerical relativity group is releasing a public catalog of black-hole-binary waveforms. The initial release of the catalog consists of 126 recent simulations that include…
Spinning, Precessing, Black Hole Binary Spacetime via Asymptotic Matching
Hiroyuki Nakano, Brennan Ireland, Manuela Campanelli +1
We briefly discuss a method to construct a global, analytic, approximate spacetime for precessing, spinning binary black holes. The spacetime construction is broken into three part…
Modeling the source of GW150914 with targeted numerical-relativity simulations
Geoffrey Lovelace, Carlos O. Lousto, James Healy +11
In fall of 2015, the two LIGO detectors measured the gravitational wave signal GW150914, which originated from a pair of merging black holes. In the final 0.2 seconds (about 8 grav…
Inspiralling, Non-Precessing, Spinning Black Hole Binary Spacetime via Asymptotic Matching
Brennan Ireland, Bruno C. Mundim, Hiroyuki Nakano +1
We construct a new global, fully analytic, approximate spacetime which accurately describes the dynamics of non-precessing, spinning black hole binaries during the inspiral phase o…
Inspiraling black-hole binary spacetimes: Challenges in transitioning from analytical to numerical techniques
Yosef Zlochower, Hiroyuki Nakano, Bruno C. Mundim +3
We explore how a recently developed analytical black-hole binary spacetime can be extended using numerical simulations to go beyond the slow-inspiral phase. The analytic spacetime…
Resolving the relative influence of strong field spacetime dynamics and MHD on circumbinary disk physics
Miguel Zilhão, Scott C. Noble, Manuela Campanelli +1
In this paper we evolve magnetized and unmagnetized circumbinary accretion disks around supermassive black hole binaries in the relativistic regime. We use a post-Newtonian expansi…
Error-analysis and comparison to analytical models of numerical waveforms produced by the NRAR Collaboration
Ian Hinder, Alessandra Buonanno, Michael Boyle +53
The Numerical-Relativity-Analytical-Relativity (NRAR) collaboration is a joint effort between members of the numerical relativity, analytical relativity and gravitational-wave data…
Asymptotically Matched Spacetime Metric for Non-Precessing, Spinning Black Hole Binaries
Louis Gallouin, Hiroyuki Nakano, Nicolas Yunes +1
We construct a closed-form, fully analytical 4-metric that approximately represents the spacetime evolution of non-precessing, spinning black hole binaries from infinite separation…
The NINJA-2 catalog of hybrid post-Newtonian/numerical-relativity waveforms for non-precessing black-hole binaries
P. Ajith, Michael Boyle, Duncan A. Brown +45
The Numerical INJection Analysis (NINJA) project is a collaborative effort between members of the numerical relativity and gravitational wave data analysis communities. The purpose…
The Einstein Toolkit: A Community Computational Infrastructure for Relativistic Astrophysics
Frank Löffler, Joshua Faber, Eloisa Bentivegna +10
We describe the Einstein Toolkit, a community-driven, freely accessible computational infrastructure intended for use in numerical relativity, relativistic astrophysics, and other…
Intermediate-mass-ratio black hole binaries II: Modeling Trajectories and Gravitational Waveforms
Hiroyuki Nakano, Yosef Zlochower, Carlos O. Lousto +1
We revisit the scenario of small-mass-ratio (q) black-hole binaries; performing new, more accurate, simulations of mass ratios 10:1 and 100:1 for initially nonspinning black holes.…
Hybrid black-hole binary initial data
Bruno C. Mundim, Bernard J. Kelly, Yosef Zlochower +2
Traditional black-hole binary puncture initial data is conformally flat. This unphysical assumption is coupled with a lack of radiation signature from the binary's past life. As a…
Intermediate-mass-ratio black hole binaries: intertwining numerical and perturbative techniques
Carlos O. Lousto, Hiroyuki Nakano, Yosef Zlochower +1
We describe in detail full numerical and perturbative techniques to compute the gravitational radiation from intermediate-mass-ratio black-hole-binary inspirals and mergers. We per…
Advances in Simulations of Generic Black-Hole Binaries
Manuela Campanelli, Carlos O. Lousto, Bruno C. Mundim +3
We review some of the recent dramatic developments in the fully nonlinear simulation of generic, highly-precessing, black-hole binaries, and introduce a new approach for generating…
Intermediate Mass Ratio Black Hole Binaries: Numerical Relativity meets Perturbation Theory
Carlos O. Lousto, Hiroyuki Nakano, Yosef Zlochower +1
We study black-hole binaries in the intermediate-mass-ratio regime 0.01 < q < 0.1 with a new technique that makes use of nonlinear numerical trajectories and efficient perturbative…
Post-Newtonian Initial Data with Waves: Progress in Evolution
Bernard J. Kelly, Wolfgang Tichy, Yosef Zlochower +2
In Kelly et al. [Phys. Rev. D, 76:024008, 2007], we presented new binary black-hole initial data adapted to puncture evolutions in numerical relativity. This data satisfies the con…